Constant-temperature control switching circuit

A switching circuit and constant temperature control technology, applied in temperature control, electrical program control, non-electric variable control, etc., can solve the problems of unfavorable growth of fruits and vegetables, affecting the quality and output of fruits and vegetables, and achieve manpower saving, simple structure and low cost Effect

Active Publication Date: 2015-03-25
JIEXIAI ELECTRICAL NANTONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In winter nights or in rainy weather, the temperature in the agricultural greenhouse is too low, which is not conducive to the growth of fruits and vegetables, affecting the quality and yield of fruits and vegetables

Method used

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  • Constant-temperature control switching circuit

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Embodiment Construction

[0013] ExampleIn the embodiment shown in the drawings, a constant temperature control switch circuit is composed of a power supply circuit, an information processing circuit and a control output circuit, wherein the power supply circuit is composed of a rectifier transformer (TC), a phase line input terminal (2), a neutral line Input terminal (1), bridge rectifier circuit (VD), filter capacitor a (C1), voltage stabilization integrated block (IC1) and filter capacitor b (C2), the primary coil of the rectifier transformer (TC) is connected to the phase line input Terminal (2) and neutral line input terminal (1), the secondary coil of the rectifier transformer (TC) is connected to the two input terminals of the bridge rectifier circuit (VD), and the positive pole of the bridge rectifier circuit (VD) is connected to the filter capacitor The positive pole of a (C1) is connected to the input terminal of the voltage stabilizer integrated block (IC1), and the output terminal of the vo...

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Abstract

The invention relates to a temperature control circuit of the production environment and discloses a constant-temperature control switching circuit. The constant-temperature control switching circuit is composed of a power circuit, an information processing circuit and a control output circuit. In the information processing circuit, a lower limit temperature signal end is connected to the input end of a NOT gate a through an isolating diode a; an upper limit temperature signal end is connected to the input end of a NOT gate b through an isolating diode b; the output end of the NOT gate b is connected to the input end of the NOT gate a through an isolating diode d; the output end of the NOT gate a is connected to the input end of the NOT gate b through an isolating diode c. In the control output circuit, a first pin of a drive resistor is connected to the negative pole of the isolating diode d and the negative pole of the isolating diode a; a second pin of the drive resistor is connected to the base of an audion; the collector of the audion is connected to a coil of a relay; a contact switch of the relay is connected between a control end a and a control end b. The constant-temperature control switching circuit is suitable for being applied in agricultural greenhouses or floriculture greenhouses or spinning production workshops, and has the advantages of being simple in structure and low in manufacturing cost.

Description

technical field [0001] The invention relates to an electronic circuit, in particular to a temperature control circuit in a production environment. Background technique [0002] In agricultural greenhouses, flower greenhouses, textile production workshops and other places, it is necessary to maintain a constant temperature, provide heating in winter, and provide air conditioning in summer to create a greenhouse environment that is conducive to the growth of greenhouse crops and flowers, or a production environment that is conducive to improving the quality and output of textiles. . [0003] The agricultural greenhouse is a frame-covered structure with thermal insulation properties. Its appearance allows people to eat off-season vegetables and fruits. Generally, agricultural greenhouses use a bamboo structure or a steel structure frame, covered with one or more layers of thermal insulation plastic film, thus forming a greenhouse space. The outer film can well prevent the los...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20G05B19/04
Inventor 吴水仙
Owner JIEXIAI ELECTRICAL NANTONG
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